Carrillo SC7700-6 Forged Piston Set BMW N55/S55 3.0L 6-Cylinder

The Carrillo SC7700-6 is a premium forged aluminum piston and ring kit designed for BMW N55 and S55 3.0L 6-cylinder engines. Engineered for high-performance applications including turbo, supercharger, and nitrous setups, these pistons are built to withstand extreme power levels while maintaining reliable operation.

Key Specifications:

• Bore: 84.0mm (3.307 inches) stock bore
• Compression Height: 32.4mm (1.276 inches)
• Compression Ratio: 10.2:1 stock (custom ratios available)
• Piston Head Volume: -9.7cc dish design with four valve reliefs
• Piston Weight: 347 grams each
• Rod Length: 144.340mm
• Wrist Pin Diameter: 0.866 inches (press-fit or floating)

Complete Kit Includes:

• Piston rings (1.20mm x 1.20mm x 2.00mm)
• Wrist pins and retainers
• Top ring: Steel with PVD coating
• Second ring: Cast iron
• Oil ring: Nitride coated carbon steel

Performance Features:

• Rated for 1,000 HP in standard configuration
• Capable of 1,600 HP with upgraded heavy-duty wrist pins (available separately)
• Dish-style piston design optimizes combustion efficiency
• Double pin oilers for enhanced lubrication
• Radius dome design maximizes quench and eliminates hot spots
• Precision cam and barrel skirt profile for tighter clearances and better ring seal
• Manufactured in Irvine, California, USA

Available in stock bore or .002-inch oversize for block rehoning. Custom compression ratios and bore sizes available as special order. All components are manufactured to factory specifications ensuring proper fitment and long-lasting performance in demanding racing and street applications.